可以从隔离存储中读取xml文件

Question

It's a Silverlight WindowsPhone Project and I'm trying to create a xml file in the isolatedstorage then I try to read from it, here is the code:

using (var file = IsolatedStorageFile.GetUserStoreForApplication())
                {
                    using (var stream = file.OpenFile("MainLBItems.xml", FileMode.Create))
                    {
                        XDocument MainLBItems = new XDocument(
                            new XDeclaration("1.0", "utf-8", "yes"),
                            new XComment("This is a comment"),
                            new XElement("Items")
                        );                        
                        MainLBItems.Save(stream);                        
                    }
                }

The problem is that when I try to read from it and here is the code

using (var file = IsolatedStorageFile.GetUserStoreForApplication())
            {
                using (var stream = file.OpenFile("MainLBItems.xml", FileMode.Open))
                {
                    XDocument MainLBItems = XDocument.Load(stream);
                    ...
                }
            }

I have an error telling "Unexpected XML declaration. The XML declaration must be the first node in the document, and no white space characters are allowed to appear before it. Line 3, position 12." and throwing an unhandled XmlException

Could you please help me resolve this problem? Thanks in advance.

I tried to add the XML Declaration separately but it didn't work too:

using (var file = IsolatedStorageFile.GetUserStoreForApplication())
                {
                    using (var stream = file.OpenFile("MainLBItems.xml", FileMode.Create))
                    {
                        XDocument MainLBItems = new XDocument();
                        MainLBItems.Declaration=  new XDeclaration("1.0", "utf-8", "yes");
                        MainLBItems.Add(
                            new XComment("This is a comment"),
                            new XElement("Items")
                        );                        
                        MainLBItems.Save(stream);                        
                    }
                }

Answer 1

As you haven't posted the XML, I can only take a guess... I have usually struck this problem when I don't have a root node in the document:

<xml version="1.0" encoding="utf-8" xmlns:myNamespace="...">
<MyNodes>
    .... etc ....
</MyNodes>